Water Quality in Nunam Iqua, AK: 167 Violations — Grade C
Grade C · Score 55/100 · 1 water system · Updated 2026-05-03
Nunam Iqua's water has moderate compliance issues. Residents in affected areas should consider filtration.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Nunam Iqua, AK has 167 violations in the EPA compliance history — breakdown below.
Water Quality by ZIP Code in Nunam Iqua
Water quality varies across Nunam Iqua's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 99666 | C | 55 | 167 | 16 | View report → |
Violation Trend
EPA violations recorded for water systems serving Nunam Iqua.
Water Quality Overview
Nunam Iqua, Alaska receives a water quality grade of C with an overall score of 55 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 1 water system serving Nunam Iqua have accumulated 167 EPA violations, including 16 health-based violations. These violations are tracked across 1 ZIP codes serving approximately 213 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Nunam Iqua's water systems have some violations that warrant attention. While the water may still be safe for most people, residents in affected ZIP codes should consider additional testing or filtration.
Lead Levels
The average 90th percentile lead level across Nunam Iqua water systems is 0.0019 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 57% of homes built before 1986, Nunam Iqua has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Radon Risk
Nunam Iqua is in EPA Radon Zone 1 (High risk). The EPA recommends all homes in Zone 1 areas be tested for radon. Radon is the second leading cause of lung cancer after smoking.
Water Systems Serving Nunam Iqua
Nunam Iqua is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 213 people across 1 ZIP codes.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 10 enforcement actions against water systems serving Nunam Iqua. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Nunam Iqua
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in Nunam Iqua Water Systems
The following contaminants have been detected or caused violations across Nunam Iqua's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| E. coli | Microbiological | N/A | 36 | 1 | No |
| Total Coliform | Microbiological | N/A | 26 | 1 | No |
| Chlorite | Disinfection Byproducts | 1 mg/L | 23 | 1 | Yes |
| Revised Total Coliform Rule | Microbiological | N/A | 10 | 1 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 0.06 mg/L | 10 | 1 | Yes |
| Fecal Coliform | Microbiological | N/A | 9 | 1 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 0.08 mg/L | 7 | 1 | No |
| Surface Water Treatment Rule | Treatment Technique | N/A | 3 | 1 | No |
| Lead | Inorganic | 0.015 mg/L | 2 | 1 | No |
| Stage 1 DBP Rule | Treatment Technique | N/A | 1 | 1 | No |
| Lead and Copper Rule | Treatment Technique | N/A | 1 | 1 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
Violation Trend Over Time
Year-by-year EPA violations recorded for water systems serving Nunam Iqua:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2021 | 2 | 2 |
| 2022 | 5 | 5 |
| 2023 | 7 | 7 |
| 2024 | 1 | 1 |
Violations have decreased from 2 in 2021 to 1 in 2024, indicating improving compliance.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Nunam Iqua. Recent actions:
| Date | Action Type |
|---|---|
| 2025-08-06 | State Order Extension |
| 2025-05-20 | State Order Extension |
| 2024-11-14 | State Informal Action |
| 2024-10-22 | State Informal Action |
| 2024-08-31 | State Order Extension |
| 2024-08-28 | State Order Extension |
| 2024-06-11 | State Order Extension |
| 2024-06-07 | State Informal Action |
| 2024-06-01 | State Order Extension |
| 2024-05-21 | State Informal Enforcement |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-08-06.
Nunam Iqua vs. Nearby Alaska Cities
How Nunam Iqua's water quality compares to similar cities in Alaska:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Nunam Iqua | C | 167 | 1 | 213 |
| Kaltag | B | 27 | 1 | 214 |
| Ruby | C | 45 | 1 | 215 |
| White Mountain | A | 4 | 1 | 210 |
Common Questions About Nunam Iqua Water
These are the most common questions residents search for about water quality in Nunam Iqua, Alaska:
Is Nunam Iqua water hard or soft? Water hardness varies by source. Nunam Iqua's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Nunam Iqua tap water? Nunam Iqua's water receives a grade of C (55/100). There are 16 health-based violations — consider filtration.
What is the best water filter for Nunam Iqua? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Nunam Iqua vs. Alaska Average
Understanding how Nunam Iqua compares to the broader Alaska average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within Nunam Iqua.
ZIP Codes in Nunam Iqua
Nunam Iqua spans 1 ZIP code. The ZIP with the lowest water quality score is 99666. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.